Random odd track playback

Hello all...
 
I updated to 2017 10 a few days ago.  Since then, a single random track, will play in a random area in the song.  For instance,  I might be listening to a verse - out of the blue, a chorus vocal harmony 5 bars ahead might start playback.
 
Its happened twice - two different songs, two different days.  Its actually kind of funny when it happens.  It doesn't bother me because I use the system 4 hours a day, its rare,  it does not affect anything - the track plays back in the proper place when played again.
 
I thought it might be memory problems or hard disk errors, but they test fine..  Course, random is as random does.
 
Anyone else see this behavior?   Take care...
 
LL